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      <a id="rezzy"></a>
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        <h2>
          <span class="refentrytitle">rezzy</span>
        </h2>
        <p>rezzy — 
      A resonant low-pass filter.
    </p>
      </div>
      <div class="refsect1">
        <a id="idp143056608"></a>
        <h2>Description</h2>
        <p>
      A resonant low-pass filter.
    </p>
      </div>
      <div class="refsect1">
        <a id="idp143057760"></a>
        <h2>Syntax</h2>
        <pre class="synopsis">ares <span class="command"><strong>rezzy</strong></span> asig, xfco, xres [, imode, iskip]</pre>
      </div>
      <div class="refsect1">
        <a id="idp143059776"></a>
        <h2>Initialization</h2>
        <p>
      <span class="emphasis"><em>imode</em></span> (optional, default=0) -- high-pass or low-pass mode. If zero, <span class="emphasis"><em>rezzy</em></span> is low-pass. If not zero, <span class="emphasis"><em>rezzy</em></span> is high-pass. Default value is 0. (New in Csound version 3.50)
    </p>
        <p>
      <span class="emphasis"><em>iskip</em></span> (optional, default=0) -- if non zero
      skip the initialisation of the filter. (New in Csound version
      4.23f13 and 5.0)
    </p>
      </div>
      <div class="refsect1">
        <a id="idp143063136"></a>
        <h2>Performance</h2>
        <p>
      <span class="emphasis"><em>asig</em></span> -- input signal
    </p>
        <p>
      <span class="emphasis"><em>xfco</em></span> -- filter cut-off frequency in Hz. As of version 3.50, may i-,k-, or a-rate.
    </p>
        <p>
      <span class="emphasis"><em>xres</em></span> -- amount of resonance. Values of 1 to 100 are typical. Resonance should be one or greater. As of version 3.50, may a-rate, i-rate, or k-rate.
    </p>
        <p>
      <span class="emphasis"><em>rezzy</em></span> is a resonant low-pass filter created empirically by Hans Mikelson.
    </p>
      </div>
      <div class="refsect1">
        <a id="idp143067616"></a>
        <h2>Examples</h2>
        <p>
      Here is an example of the rezzy opcode. It uses the file <a class="ulink" href="examples/rezzy.csd" target="_top"><em class="citetitle">rezzy.csd</em></a>.

      </p>
        <div class="example">
          <a id="idp143069376"></a>
          <p class="title">
            <strong>Example 764. Example of the rezzy opcode.</strong>
          </p>
          <div class="example-contents">
            <p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
            <pre class="programlisting">
<span class="csdtag">&lt;CsoundSynthesizer&gt;</span>
<span class="csdtag">&lt;CsOptions&gt;</span>
<span class="comment">; Select audio/midi flags here according to platform</span>
-odac   <span class="comment">;;;realtime audio out</span>
<span class="comment">;-iadc    ;;;uncomment -iadc if realtime audio input is needed too</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o rezzy.wav -W ;;; for file output any platform</span>
<span class="csdtag">&lt;/CsOptions&gt;</span>
<span class="csdtag">&lt;CsInstruments&gt;</span>

<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">ksmps</span> <span class="op">=</span> 32
<span class="ohdr">0dbfs</span>  <span class="op">=</span> 1
<span class="ohdr">nchnls</span> <span class="op">=</span> 2

<span class="oblock">instr</span> 1

asaw <span class="opc">vco2</span> .3, 110	<span class="comment">;sawtooth</span>
kcf  <span class="opc">line</span> 1760, p3, 220	<span class="comment">;vary cut-off frequency from 220 to 1280 Hz</span>
kres <span class="op">=</span> p4		<span class="comment">;vary resonance too</span>
ares <span class="opc">rezzy</span> asaw, kcf, kres
asig <span class="opc">balance</span> ares, asaw
     <span class="opc">outs</span> asig, asig

<span class="oblock">endin</span>
<span class="csdtag">&lt;/CsInstruments&gt;</span>
<span class="csdtag">&lt;CsScore&gt;</span>

<span class="stamnt">i</span> 1 0 4 10
<span class="stamnt">i</span> 1 + 4 30
<span class="stamnt">i</span> 1 + 4 120	<span class="comment">;lots of resonance</span>
<span class="stamnt">e</span>
<span class="csdtag">&lt;/CsScore&gt;</span>
<span class="csdtag">&lt;/CsoundSynthesizer&gt;</span>
</pre>
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        <p><br class="example-break" />
    </p>
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      <div class="refsect1">
        <a id="idp143073664"></a>
        <h2>See Also</h2>
        <p>
      <a class="link" href="biquad.html" title="biquad"><em class="citetitle">biquad</em></a>,
      <a class="link" href="moogvcf.html" title="moogvcf"><em class="citetitle">moogvcf</em></a>
    </p>
      </div>
      <div class="refsect1">
        <a id="idp143076672"></a>
        <h2>Credits</h2>
        <p>
      </p>
        <table border="0" summary="Simple list" class="simplelist">
          <tr>
            <td>Author: Hans Mikelson</td>
          </tr>
          <tr>
            <td>October 1998</td>
          </tr>
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        <p>
    </p>
        <p>New in Csound version 3.49</p>
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